Bf Xr6T Fault Code Advice (Etc Warning)

[Spoony]

Hi, hoping someone more knowledged than me could shed some light on this one!

Ok so the coon's (07 XR6T's) been sitting a week or so in the driveway not started.

I start it yesterday and I've got an ETC (Electronic Throttle Control) warning on the dash.

At ZERO throttle it flashes, with any throttle it goes solid. According the manual flashing means a fault that wont affect peformance, soild means it will affect performance.

The car runs/drives as normal however.

I did have this fault come up (soild not flashing) many months ago once. I turn car on off and it went....... until now. (****s me now not driving it for a week would make a difference)

Took it to a mates workshop last night with a scan tool and pulled the codes out of it as per the picture below. (ignore the bus fault code, no worried it didn't come back after clearing)

Codes 2127 & 2129 come back immediately after clearing, 2138 & 2140codes only come up after throttle has been used.

Anyone shed anymore light on this?

It appears to be the TPS maybe, but when driving at idle, ETC is flashing = top two codes, apply throttle then it goes solid (indicating 2nd two codes). The weird part is I can drive & accerate using cruise control and the ETC light only flashes, never goes solid.

Now the cruise would be still using the throttle, just not getting the signal from the pedal box, instead direct from the ECU I assume.

To me this indicates possible fault at the TPS at idle but issue between pedals and TPS at throttle. (****s me how seeming two faults pop up out of blue)

We graphed the voltage with throttle action and 0.5 at 0 throttle and seemed to get up near 5v at full/high throttle. Hence I guess why car runs 100% fine.

The kicker is, it's under warranty still (extended) but the reparier has to submit quote/issue and it gets approved. I've seen people chase issues like this big time, dont' really want to just get a TPS (the cheap part), then find its the pedal box component (dearer part).

The car drives to Melbourne next weekend, so really do need it sorted by then!

Cheers.

Dan

Edited 03/02/11 09:07 PM by Spoony

[Rudiger]

I would just suggest the old fix mate. Take the battery off for a good half hour. You may have already done this but there is strange shiot that goes on with these cars.

You have nothing to loose.

[Spoony]

yep, already tried that one.

looking at the code info it's not all that helpful as TPS is throttle position sensor, PPS is Pedal Position Sensor, the SW means Sensor or Switch.

So doesnt' actually tell you if it's TPS or PPS,

Interestingly they are all voltage releated, so wondering if car has an voltage level issue tripping this or the just the throttle circuit. It does start fine.

Edited 03/02/11 09:39 PM by Spoony

[Rudiger]

One way to test for voltage drop is to lock the car and arm the alarm. If there is a sunstantial voltage drop the alarm should go off.

These are electronic throttle arent they? Maybe one of the switches has shat itself. If its under extended warranty drop into Fraud they may know straight away whats wrong.

[Spoony]

Yep electronic throttle, I dunno what was wrong with cable, hell most standard cable throttle cars I find more repsonsive/better to drive. lol

It's obviously only very minor, I guess an out of 'range' issue more so than a complete stuffed issue as the car runs 100% fine.

[Spoony]

Just found Aust Ford Forums have a database of all codes, WIN. info below.

Its definately related to pedal pos sensor not the TPS. Either wire issue or its faulty by looks of it. Time to go to Fraud and make more use of this extended warranty.

P2127 Accelerator pedal position (APP) Circuit E (APP2) low input Damaged APP Damaged wiring and or connectors to APP Defective PCM

P2129 Accelerator pedal position (APP) Circuit E (APP2) intermittent fault

Damaged APP Damaged wiring and or connectors to

other: APP Defective PCM

P2138 Accelerator pedal position APP1 and APP2 disagree

Damaged accelerator pedal position sensor Damaged or defective wiring between the accelerator pedal sensor and PCM

P2140 Accelerator pedal position APP2 and APP3 disagree

Damaged accelerator pedal position sensor Damaged or defective wiring between the accelerator pedal sensor and PCM